1&rpar; Cold and hot water supply systems for civil and industrial constructions&comma; e&period;g&period;in residential buildings&comma; hospitals&comma; hotels&comma; school and office buildings&comma; shipbuilding2&rpar; Drinking water systems and food industry pipe works3&rpar; Central air conditioning system4&rpar; Irrigating system for gardens and green houses5&rpar; Public and sport facilities such as swimming pools and stadiums6&rpar; For rainwater utilization systems